It is more acceptable to have a few casements sprinkled in a wall of double hungs vs. the other way around.

If you have a bunch of casements, I would try to stay with that operator.

A 'Colonial' and 'double-hung' go together. How old are your windows? What do you plan to gain in replacing them?

We replaced every *aluminum frame* window in our 1950's ranch home. The house was much more comfortable, and we were happy we did it. However...when we sold, I asked why 'all new windows' wasn't on the listing sheet. Realtors said that the average buyer just sees 'windows' and doesn't give any weight to this improvement.

Trust me, if you used a high quality brand, a good realator would of advertised that. When you use a cheap brand, realators never mention it because a smart homeowner will just replace them even though they are new.

Thank you for the comments so far. Our house is 20-21 years old. The original "builder grade" windows are double pane junk that are falling apart and are as energy efficient as a sheet of paper. Ironically I spoke with a local realtor not because we are thinking of selling, but to get her opinion. She said she has seen clients be excited about just knowing they were upgraded, others love the idea of triple pane regardless of brand, some love the "brand name" of those that begin with P or A, regardless of quality. Essentially, like any consumer, some people flock to one feature, benefit, or name while others are opposite. Her advice was pick what we want for our reasons.

What we hope to gain is improved air flow, improved energy efficiency, maybe improved looks of the house. improved ease of use - some of the DH are hard to open. With think the casements achieve the improved air flow and improved energy efficiency. Also likely improve ease of use, especially for my small framed wife. Not sure however the look would be right based upon the above comments.

I went to a pricey open house last week (to look at their cabinet design). Their handout called out the windows. Which were VGDF (good) but Jeld Wen (their custom stuff, but still less good, from what I hear.)

Having the different windows on different stories helps: it's harder when they're right next to each other.

You can design sticking that looks similar to double hung. If you look around on the web, you can find people with casements with a "faux" rails where the double hungs have real rails.

I'm mixing the two. Mostly they're on different walls but in a couple of cases, there is a double hung on walls with casements and a fixed window on a wall with double hungs. The sticking for the casements/fixed is at the same level where the sashes meet on the double hungs. it doesn't look exactly the same but it carries the design idea across.